What does myelogenous mean?
Myelogenous is a medical adjective meaning relating to or originating in bone marrow. It is used especially when describing leukemias that arise from the abnormal development of blood-forming cells in the marrow rather than from lymphoid tissue. The best-known application is the name acute myelogenous leukemia, commonly abbreviated AML, and its older name chronic myelogenous leukemia. In these contexts, the term identifies the condition's origin or cellular character without replacing more specific classifications based on the particular genetic abnormality involved. Myelogenous should not be treated as an interchangeable synonym for every use of myeloid: myeloid has a broader range of uses and commonly refers to the marrow or granulocytic blood-cell lineage, whereas myelogenous more specifically signals marrow origin. The word is formal and relatively uncommon outside clinical and scientific contexts, where related expressions such as marrow-derived and haematopoietic may be preferred in general writing.
adjectiveRelating to or originating in bone marrow, especially to the abnormal proliferation of blood-forming cells associated with certain forms of leukemia.
- Relating to or originating in bone marrow, especially to a malignancy arising from marrow-derived blood-forming cells.
"The biopsy confirmed that the leukemia was myelogenous rather than lymphoid."
"Acute myelogenous leukemia develops from rapidly dividing cells in the bone marrow."
"The report described the tumour as a rare myelogenous neoplasm."
The name is an anatomical clue in plain sight: myelogenous points to the marrow, where many blood cells are produced.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does myelogenous come from?
Myelogenous combines the Greek myelos, meaning marrow, with the suffix -genous, associated with origin, production, or formation. It thus carries the idea of arising from or developing in marrow. Related English words including myeloid, myelin and myeloma draw on the same ancient Greek reference to marrow, although they developed distinct medical meanings.
How myelogenous is actually used
This is chiefly a formal medical term. In current usage it occurs most often in the names of forms of leukemia, while 'myeloid' is the broader and more commonly encountered adjective.
Easily confused with myelogenous
Myeloid is broader, commonly referring to marrow or the granulocytic blood-cell lineage, whereas myelogenous more specifically characterises a disorder as arising from or involving marrow.